CN110392385B

CN110392385B - Communication method and related equipment

Info

Publication number: CN110392385B
Application number: CN201810354216.6A
Authority: CN
Inventors: 胡星星; 秦龙; 王君; 赵景
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-19
Filing date: 2018-04-19
Publication date: 2021-04-09
Anticipated expiration: 2038-04-19
Also published as: CN110392385A

Abstract

The present application relates to the field of communications technologies, and in particular, to an interference processing method. The method comprises the steps that the terminal which is interfered in a service cell detects the interference of the terminal, the terminal or the service cell determines interference source information according to a detection result, the service cell sends the interference source information to an adjacent cell, and the adjacent cell determines an interference source which causes the interference according to scheduling history information and the interference source information, so that the interference source can be accurately inhibited, and the influence of the interference source on the terminal in the service cell is reduced under the condition that the communication quality of other terminals is not influenced.

Description

Communication method and related equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and a related device.

Background

With the development of wireless communication services, more and more services have higher requirements on throughput. In order to improve the throughput of communication services, on one hand, base stations of a wireless network are more and more densely arranged, and on the other hand, the wireless network adopts a higher-frequency band for communication. In addition to throughput requirements, communication services also place requirements on the quality of communications provided to users, which may be reflected in providing approximately the same quality of communications for all users, including edge users.

One factor affecting the communication quality is signal interference, and particularly, a cell may be interfered by signals of neighboring cells during a process of serving a terminal, resulting in a degradation of the communication quality between the cell and the terminal. In order to suppress interference, it is necessary to determine the interference source, such as one or a group of terminals, in the neighboring cell that generates interference.

Disclosure of Invention

The application provides a communication method and a communication device for determining an interference source generating interference in a neighboring cell.

In a first aspect, a communication method applied to a target terminal is provided, where the method includes: receiving a notification message from a serving cell home base station, wherein the notification message is used for indicating the target terminal to perform interference detection and/or reporting configuration parameters; detecting the interference of the base station of the adjacent cell to the target terminal according to the notification message; if the interference caused by the base station to which the adjacent cell belongs to the target terminal is detected, determining interference source information of the interference, wherein the interference source information comprises port identification information, and the port identification information is used for indicating a port identification corresponding to an interference source; reporting the interference source information to the base station to which the serving cell belongs according to the notification message; and sending the interference source information to the base station of the adjacent cell by the base station of the serving cell, wherein the interference source information is used for indicating an interference source.

In an implementation manner, the notification message includes at least one of reporting configuration information and neighboring cell configuration information, where: the reporting configuration information is used for indicating a rule which needs to be followed in the process of reporting the interference source information by the target terminal; the neighbor cell configuration information is used for instructing the target terminal to generate a pilot signal for detecting interference. Specifically, the notification message includes: reporting at least one of configuration information and neighboring cell configuration information; wherein: the reporting configuration information includes information indicating one or more of: reporting time, reporting conditions, the maximum number of interference sources to be reported and whether the measured channel type needs to be reported or not; the neighbor configuration information includes information indicating one or more of: the type of pilot signal used by the base station to which the neighboring cell belongs, and the rule of mapping the pilot signal to the communication resource.

In one implementation, the interferer information further includes information indicating one or more of: interference time information and resource information of interference. Optionally, the resource information includes resource block information, wherein a resource block may be one resource block or a part of a resource block such as a half resource block or a quarter resource block. Optionally, the resource information comprises a smaller granularity than the resource blocks. Optionally, the resource information includes a granularity larger than the resource blocks, such as a partial resource Bandwidth (BWP).

In one implementation, before reporting the interference source information to the base station to which the serving cell belongs according to the notification message, the communication method further includes: judging whether the interference is strong interference or weak interference; and if the interference is strong interference, reporting the interference source information to the base station to which the serving cell belongs according to the notification message.

In one implementation, the communication method further includes: obtaining interference strength related information of the interference; and sending the interference strength related information to a base station to which a serving cell belongs.

In one implementation, the communication method further includes: receiving communication parameters used by the interference source sent by a base station to which the serving cell belongs; and suppressing the interference according to the communication parameters. Specifically, the suppressing the interference according to the communication parameter includes: generating a signal opposite to the interference signal by using a coding parameter of the interference signal in the communication parameters, and suppressing the interference signal in an interference cancellation manner; or, the interference signal is restored by using the coding parameter of the interference signal in the communication parameters, and the interference signal is subtracted from the total data signal of the target terminal so as to suppress the interference signal.

In one implementation, the communication method further includes: receiving a physical downlink control channel signal sent by a base station to which the adjacent cell belongs, decoding the physical downlink control channel signal by using the identifier of the target terminal, and obtaining a communication parameter used by the interference source; and suppressing the interference according to the communication parameters.

In a second aspect, a communication method applied to a base station to which a serving cell belongs is provided, and the method includes: receiving interference source information sent by a target terminal, wherein the interference source information is used for indicating an interference source; the interference source information comprises port identification information, and the port identification information is used for indicating a port identification corresponding to an interference source; and sending the interference source information to the base station to which the adjacent cell belongs.

In one implementation, the interferer information sent by the target terminal further includes information indicating one or more of: interference time information and resource information of interference.

In one implementation, the communication method further includes: obtaining the target reporting time of the interference source information; determining interference moment information corresponding to the target reporting moment according to the corresponding relation between the reporting moment and the interference moment information; and the interference time information is contained in the interference source information and is sent to the base station which the adjacent cell belongs to.

In one implementation, the sending the interference source information to the base station to which the neighboring cell belongs includes: determining whether the interference corresponding to the interference source information is strong interference or weak interference; and if the interference corresponding to the interference source information is strong interference, sending the interference source information to a base station to which an adjacent cell belongs.

In one implementation, the determining whether the interference corresponding to the interference source information is strong interference or weak interference includes: receiving interference strength related information corresponding to the interference source information sent by the target terminal; and determining whether the interference corresponding to the interference source information is strong interference or weak interference according to the interference strength related information.

In one implementation, the determining whether the interference corresponding to the interference source information is strong interference or weak interference includes: and determining whether the interference corresponding to the interference source information is strong interference or weak interference according to Channel Quality Indicator (CQI) information of a channel between the target terminal and the interference source information.

In a third aspect, a communication method applied to a base station to which a neighboring cell belongs is provided, and the method includes: receiving interference source information from a base station to which a serving cell belongs, wherein the interference source information is used for indicating an interference source; and determining an interference source corresponding to the received interference source information according to the corresponding relation between the interference source information and the interference source in the historical scheduling information and the received interference source information. Optionally, identification information of the interference source is determined.

In one implementation, the interferer information includes: port identification, interference time information and resource information of interference; the determining an interference source corresponding to the received interference source information includes: and searching terminals corresponding to the port identification, the interference moment information and the resource information of the interference in historical scheduling information, and determining the searched terminals as interference sources. Optionally, the resource information where the interference is located includes resource block information where the interference is located. Optionally, specifically, the searching for the terminals corresponding to the three is to search for the terminal identification information corresponding to the three.

In one implementation, the interferer information includes: the identification of the interfered terminal in the base station to which the serving cell belongs; the determining an interference source corresponding to the received interference source information includes: and searching the terminal corresponding to the interfered terminal in the historical scheduling information, and determining the searched terminal as an interference source. Optionally, the searching for the terminal corresponding to the interfered terminal specifically includes: and searching a terminal identifier corresponding to the interfered terminal identifier.

In a fourth aspect, a communication device is provided for performing the method in any of the implementations of the first aspect, the second aspect, the third aspect, or the third aspect.

In a fifth aspect, a communication apparatus is provided, including: a processor coupled with the memory. A memory for storing a computer program; a processor configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any of the implementations of the first aspect, the second aspect, the third aspect, or the third aspect.

In a sixth aspect, a communication apparatus is provided that includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions.

Optionally, the apparatus may also include one or more memories for coupling with the processor that hold the necessary program instructions and/or data for the apparatus. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

The apparatus may be a smart terminal or a wearable device, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.

The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of the communication chip.

In one implementation, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the terminal device in any one of the implementations of the first aspect and the first aspect.

In a seventh aspect, a communication device is provided that includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the base station in the above method. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which stores program instructions and/or data necessary for the base station. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

The apparatus may be a base station, a gNB, a TRP, or the like, and the communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.

In one implementation, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the base station in any of the second aspect, the possible implementation manner of the second aspect, the third aspect, or the possible implementation manner of the third aspect.

In an eighth aspect, there is provided a readable storage medium comprising a program or instructions which, when run on a computer, performs a method in any of the implementations of the first aspect, the second aspect, the third aspect or the third aspect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1A is a schematic diagram of a communication system suitable for use in the communication method of the present application;

fig. 1B is a schematic diagram of a scenario in which terminals in two cells cause interference;

fig. 2 is a schematic flow chart of a communication method provided in the present application;

fig. 3 is a schematic diagram illustrating a relative relationship between time, frequency and layer in a communication process provided in the present application;

fig. 4 is another schematic flow chart of a communication method provided in the present application;

fig. 5 is a schematic flow chart of a communication method provided in the present application;

fig. 6 is a schematic structural diagram of a communication device provided in the present application;

fig. 7 is a schematic structural diagram of a terminal device provided in the present application;

fig. 8 is a schematic structural diagram of a network device provided in the present application.

Detailed Description

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: long Term Evolution (LTE) systems, Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth Generation (5th Generation, 5G) systems, such as new radio access technology (NR), and future communication systems, such as 6G systems.

This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

In the embodiment of the present application, information (information), signal (signal), message (message), channel (channel) may be mixed, and it should be noted that the intended meanings are consistent when the differences are not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.

In the embodiment of the present application, sometimes a subscript such as W1 may be mistaken for a non-subscript form such as W1, and its intended meaning is consistent when the distinction is not emphasized.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The embodiment of the application can be applied to a Time Division Duplex (TDD) scene and can also be applied to a Frequency Division Duplex (FDD) scene.

The embodiment of the application can be applied to a traditional typical network, and can also be applied to a future UE-centric (UE-centric) network. A UE-centric network introduces a network architecture without a cell (Non-cell), that is, a large number of small stations are deployed in a certain area to form a super cell (super cell), and each small station is a Transmission Point (TP) or a TRP of the super cell and is connected to a centralized controller (controller). When the UE moves in the Hyper cell, the network side equipment selects a new sub-cluster for the UE to serve in real time, thereby avoiding real cell switching and realizing the continuity of UE service. The network side device comprises a wireless network device.

In the embodiment of the present application, different base stations may be base stations with different identities, and may also be base stations with the same identity and deployed in different geographic locations. Since the base station does not know whether the base station relates to the application scenario of the embodiment of the present application before the base station is deployed, the base station or the baseband chip should support the method provided by the embodiment of the present application before the base station is deployed. It is to be understood that the base stations with different identities can be base station identities, cell identities, or other identities.

Some scenarios in the embodiment of the present application are described by taking a scenario of an NR network in a wireless communication network as an example, it should be noted that the scheme in the embodiment of the present application may also be applied to other wireless communication networks, and corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

In the embodiment of the present application, the beam may be understood as a spatial resource, and may refer to a transmission or reception precoding vector having energy transmission directivity. And, the transmission or reception precoding vector can be identified by index information. The energy transmission directivity may refer to that, in a certain spatial position, a signal subjected to precoding processing by the precoding vector is received with good reception power, such as meeting a reception demodulation signal-to-noise ratio; the energy transmission directivity may also mean that the same signal transmitted from different spatial locations received through the precoding vector has different reception powers.

Optionally, the same communication device (e.g. terminal device or network device) may have different precoding vectors, and different devices may also have different precoding vectors, i.e. corresponding to different beams.

One communication device may use one or more of a plurality of different precoding vectors at the same time, i.e. may form one or more beams at the same time, depending on the configuration or capabilities of the communication device. The information of the beam may be identified by index information. Optionally, the index information may be configured to correspond to a resource Identifier (ID) of a terminal device (e.g., a user equipment UE), for example, the index information may correspond to an ID or a resource of a configured channel state information reference signal (CSI-RS), or may correspond to an ID or a resource of a configured uplink Sounding Reference Signal (SRS). Or, alternatively, the index information may also be index information explicitly or implicitly carried by a signal or channel carried by a beam, for example, the index information may be index information indicating the beam by a synchronization signal or a broadcast channel transmitted by the beam.

For the convenience of understanding the embodiments of the present application, a communication system applied to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 1A as an example. Fig. 1A shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in fig. 1A, the communication system 100 includes a network device 102 and a terminal device 106, where the network device 102 may be configured with multiple antennas and the terminal device may also be configured with multiple antennas. Optionally, the communication system may further include the network device 104, and the network device 104 may also be configured with multiple antennas.

It should be understood that network device 102 or network device 104 may also include a number of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, etc.).

The network device is a device with a wireless transceiving function or a chip that can be set in the device, and the device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access Point (AP), wireless relay Node, wireless backhaul Node, transmission point (TRP or transmission point, TP), etc., and may also be 5G, such as NR, a gbb in the system, or a transmission point (TRP or TP), a set (including multiple antennas) of a base station in the 5G system, or a panel of a base station (including multiple antennas, or a BBU) in the 5G system, or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), Medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein.

A terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. The terminal device and the chip that can be installed in the terminal device are collectively referred to as a terminal device in this application.

In the communication system 100, the network device 102 and the network device 104 may each communicate with a plurality of terminal devices (e.g., the terminal device 106 shown in the figure). Network device 102 and network device 104 may communicate with any number of terminal devices similar to terminal device 106. It should be understood that the terminal device communicating with network device 102 and the terminal device communicating with network device 104 may be the same or different. The terminal device 106 shown in fig. 1A may communicate with both the network device 102 and the network device 104, but this only illustrates one possible scenario, and in some scenarios, the terminal device may communicate with only the network device 102 or the network device 104, which is not limited in this application.

It should be understood that fig. 1A is a simplified schematic diagram of an example for ease of understanding only, and that other network devices or other terminal devices may also be included in the communication system, which is not shown in fig. 1A.

In a wireless communication network, a terminal may be interfered by signals of terminals in neighboring cells when communicating with the cells, thereby affecting the data receiving effect of the terminal. As shown in fig. 1B, a cell a is a serving cell, a cell B is an interfering cell, User Equipments (UEs) UE1 and UE2 in a coverage area of the cell a can communicate with a cell a base station, and user equipments UE2, UE3 and UE4 in a coverage area of the cell B can communicate with a cell B base station. It can be seen that the user equipment UE2 is in the coverage of both cell a and cell B. For the UE1, the cell a is a serving cell, the cell B is an interfering cell, and the UE1 is interfered by the UEs 2 and 3 in the interfering cell B during communication with the cell a, so that the communication quality of the UE1 is affected. The user equipment UE may also be referred to as a terminal UE.

In order to improve communication quality, Interference Cancellation (IC) or Interference Suppression (IS) IS required. At present, in order to improve the effect of IC or IS, a serving cell may determine, according to a ratio of main interference reported by a terminal UE to other interference, an interference strength of the terminal UE, and if the interference strength IS relatively high, the serving cell notifies a Resource Block (RB) position of the interfered terminal UE to the interfering cell, so that the interfering cell limits some scheduling information of the terminal UE in the interfering cell according to the RB position, and reduces interference of the terminal UE in the interfering cell to the terminal UE in the serving cell. This process may be referred to as cell-level negotiation or cooperation.

In the conventional cell cooperation method, resource blocks used by terminals generating interference in an interfering cell are limited. However, in practice, only a few terminals in the interfering cell may cause interference to the serving cell, and this limitation may reduce the performance of terminals that do not cause interference or interfere less with terminals in the serving cell in the interfering cell, thereby affecting the performance of the entire communication system. For example, terminal UE4 in fig. 1B, terminal UE4 may not interfere with terminal UE1, but terminal UE4 may be affected by the restriction of resource blocks.

The specific reason for the above effect is that the cell schedules multiple terminals on the same resource block at the same time, and different terminals use different ports or beams of the resource block, for example, terminal UE2 in fig. 1B uses port 2 or beam 2 of one resource block, terminal UE3 uses port 3 or beam 3 of the resource block, and terminal UE4 uses port 1 or beam 1 of the resource block. Terminal UE2 and terminal UE3 may interfere with the serving cell and thus the resource blocks may be limited, but the performance of terminal UE4 may be similarly affected.

Therefore, the communication method can accurately identify which terminal or terminals in the interference cell cause interference to the service cell, so that the terminals are accurately controlled, the limitation to the terminals which do not cause interference is prevented, and the normal communication of the terminals which do not cause interference is ensured. It should be noted that the interference cancelled or suppressed by the terminal may include inter-cell interference and intra-cell interference. A terminal in a serving cell is interfered and receives data, but a terminal in a neighboring cell may be transmitting data or receiving data.

It should be noted that the serving cell is specifically implemented as a base station to which the serving cell belongs, and the adjacent cell is specifically implemented as a base station to which the adjacent cell belongs. For convenience of description, a base station to which a serving cell belongs may be referred to as a serving cell, and a base station to which an adjacent cell belongs may be referred to as an adjacent cell. The base station to which the serving cell belongs and the base station to which the neighboring cell belongs may be the same base station or different base stations. If there are multiple serving cells, the base stations to which the multiple serving cells belong may be the same base station or different base stations. If there are multiple adjacent cells, the base stations to which the multiple adjacent cells belong may be the same base station or different base stations.

As shown in fig. 2, the communication method provided by the present application specifically includes the following steps S201 to S205.

S201: the serving cell sends a notification message to the target terminal, wherein the notification message is used for indicating the target terminal to perform interference detection and/or reporting configuration parameters.

Here, the serving cell may first determine to which terminal or terminals in the serving cell to send the notification message, and for convenience of description, these terminals may be referred to as target terminals. It can be understood that the target terminal is an interfered terminal, and a "target" in the target terminal is used to distinguish the interfered terminal from an interference source terminal. The determination of the target terminal may be performed in various ways. In one determination method, the serving cell may determine all terminals in the serving cell as target terminals. In another determination manner, the serving cell may obtain performance parameters of each terminal in the serving cell, and select a terminal whose performance parameters satisfy a certain condition as a target terminal. It is understood that the performance parameter is a parameter related to interference detection. For example, the performance parameter may be a Channel Quality Indication (CQI), and if the CQI of a terminal is lower than a certain threshold, the terminal may be determined as a target terminal; as another example, a terminal having IC or IS capabilities may be determined to be a target terminal. For ease of understanding, a brief description of an IC or IS capable terminal follows.

As the processing power of the terminal becomes more powerful, it can integrate advanced receivers, thus having IC or IS capabilities. For example, especially for Wireless To The X (WTTX) type terminals, such terminals have strong processing capabilities, do not require power consumption, heat generation, volume, and the like, and can completely have strong IC/IS capabilities. It should be noted that advanced receivers capable of canceling or suppressing interference may also be referred to as IC/IS receivers. For an IC/IS receiver, different cancellation or suppression effects can be achieved for different interference characteristics. For example, strong interference is better than weak interference in cancellation or suppression effect; for an IC receiver, the effect of interference cancellation is more obvious when the MCS is low Modulation and Coding Scheme (MCS) of the interference signal compared with the MCS of the interference signal is high. For IS receivers, the effect of interference cancellation IS more pronounced for low rank (rank) of the interfering signal relative to high rank (rank) of the interfering signal.

The notification message may include reporting configuration information, where the reporting configuration information is used to indicate a rule according to which the interfered terminal needs to report the interfering source information. Specifically, the reporting configuration information may include information indicating one or more of the following: reporting time, reporting conditions, maximum number of interference reported, and whether the measured channel type needs to be reported. The information contained in the reporting configuration information may indicate the above content items explicitly or implicitly. It should be noted that the information included in the reporting configuration information may only indicate the above partial content items, in which case the remaining content items may be known by the target terminal through other manners, for example, may be configured in the target terminal in advance, or the target terminal actively requests the base station to which the serving cell belongs.

The reporting time may be a periodic reporting time, a persistent reporting time, or an ordered reporting. For example, the serving cell may notify the terminal of the periodic reporting, and the reporting time may be set to the period length and the starting time of the reporting, so that the terminal may determine the reporting time of each period according to the starting time and the period length, and perform the periodic reporting. For another example, the serving cell may notify the terminal to continuously report within a certain time period, and the reporting time may be set as the starting time point and the ending time point, so that the terminal may continuously report within the time period formed by the two time points. For another example, the serving cell may notify the terminal to report at a certain time point (for example, the protocol may specify how long the terminal reports after receiving the command sent by the serving cell, or a reporting time is indicated in a notification message sent by the serving cell), and then the terminal may report at the reporting time.

The reporting condition is used for limiting the interference reported by the terminal. The terminal may detect interference strength related information, such as interference strength or interference size, and the reporting condition may be reporting interference of which the interference strength exceeds a certain threshold, which is also referred to as strong interference, that is, reporting only interference information of the detected strong interference.

The maximum number of interference reported is also called the maximum number of interference sources reported, and is used to limit the maximum number of interference reported by the terminal, so as to reduce the overhead of resources. The reason is that the terminal needs to consume a certain communication resource when reporting the interference strength related information, and the more the number of reported interference is, the more the communication resource consumed by the interference strength related information is.

Whether the channel type needing to be reported and measured is used for indicating whether the type of the communication channel influenced by the interference needs to be indicated when the terminal reports the interference. If the measured channel type needs to be reported, the terminal indicates whether a communication channel affected by some interference is a Physical Downlink Shared Channel (PDSCH) or a Physical Downlink Control Channel (PDCCH) when reporting the interference. The PDCCH carries resource location information occupied by the PDSCH and coding information (such as MCS, rank, etc.) adopted by the PDSCH. The reason for distinguishing the communication channels is that the interference cancellation methods used by different communication channels are different, and reporting the type of the communication channel to the serving cell can enable the serving cell to cancel interference according to the type of the communication channel.

It should be noted that the notification message may further include a type of a communication channel for notifying the terminal to perform interference measurement, and is used to instruct the terminal to perform interference measurement on which communication channels. The type of communication channel for interference measurement may include one or more of PDCCH, PDSCH. If the type of the communication channel informing the terminal to carry out interference measurement is PDSCH, the terminal measures the interference suffered by the PDSCH sent to the terminal by the serving cell; and if the type of the communication channel informing the terminal to carry out interference measurement is PDCCH, the terminal measures the interference suffered by the PDCCH sent to the terminal by the serving cell.

The notification message may further include neighboring cell configuration information, and the neighboring cell configuration information may include information indicating one or more of the following: rules for mapping pilot signals to communication resources, types of pilot signals of neighboring cells. The rule for mapping the pilot signal to the communication resource may include: the number of pilot signal ports in the adjacent cell, the resource location information of the pilot signal, and the port distinguishing method of the pilot signal. The rule for mapping pilot signals to communication resources may be referred to as: the pattern of the pilot signals mapped to the communication resources, or the manner in which the pilot signals are mapped to the communication resources.

It should be noted that the information included in the neighbor cell configuration information may explicitly or implicitly indicate the above content items. The neighboring cell configuration information is used for indicating the interfered terminal to generate a pilot signal for detecting interference. It should be noted that the information included in the neighboring cell configuration information may only indicate the above partial content items, in which case the remaining content items may be obtained by the target terminal through other manners, for example, may be configured in the target terminal in advance, or the target terminal actively requests the base station to which the serving cell belongs. The pilot signal used by the adjacent cell can be used to determine the port identifier used by the terminal generating interference in the adjacent cell, and then the terminal generating interference can be determined according to the corresponding relationship between the port identifier and the terminal. Specific description can be found below, and is not repeated here.

Since the type of pilot signal differs depending on the manner in which the target terminal generates the pilot detection signal, it is necessary to notify the terminal of the type of pilot signal. For example, the type of the pilot signal may include a demodulation reference signal (DMRS) or a channel-state information reference signal (CSI-RS). DMRS is a reference signal used to demodulate data, CSI-RS is a reference signal used to measure channel quality, which are two different types of pilot signals. It should be noted that the pilot detection signal is generated by the target terminal and is used for detecting a pilot signal transmitted by a terminal in an interfering cell or transmitted by the interfering cell, which may cause interference to the target terminal. That is, the target terminal needs to generate one identical pilot signal in order to detect interference of the pilot signal. This pilot signal is used for detection and may therefore be referred to as a pilot detection signal. It should be noted that the type of the pilot signal herein may also be used to indirectly indicate a channel type for the target terminal to perform interference measurement (for example, the notification message does not include the type of the communication channel for notifying the terminal to perform interference measurement), that is, the target terminal reflects the corresponding interference by measuring the pilot signal.

The number of pilot signal ports in the neighboring cell is used to indicate what form of pilot signal the target terminal generates. The reason is that the number of ports divided in a cell is different, and the pilot signal corresponding to each port is different. For example, if the number of ports divided in a cell is 6, the pilot signals corresponding to the ports 1 to 6 are pilot signals a1 to a 6; if the number of the divided ports in the cell is 8, the pilot signals corresponding to the port 1 are B1-B8. Therefore, the serving cell needs to inform the target terminal of the port number of the neighboring cell, so that the target terminal can know whether the pilot signals a1-a6 or B1-B8 need to be generated. The pilot signal port may be referred to as a port.

The resource location information of the pilot signal specifically refers to a location of the pilot signal in the communication resource, such as a time domain location, a frequency domain location, a code domain location, and the like. Where the frequency domain position may refer to a unit of resource block in the communication resource, or a unit of granularity smaller than the resource block (such as Resource Element (RE), or one half or one quarter of the resource block), or may specifically be a unit of fractional resource Bandwidth (BWP), and one BWP may be composed of a plurality of resource blocks or a plurality of granularities smaller than the resource block. It should be noted that the resource location information of the pilot signal may be referred to as location, or communication resource location.

The port distinguishing method of the pilot signal is used for informing the corresponding relation between the pilot signal port of the adjacent cell of the target terminal and the position of the communication resource. For example, the port distinguishing method may include any one or a combination of frequency domain orthogonality, time domain orthogonality, and code domain orthogonality, where the frequency domain orthogonality and the time domain orthogonality indicate that the ports of the neighboring cells and the communication resource positions are in a one-to-one relationship, the code domain orthogonality indicates that the pilot signal ports of the neighboring cells and the communication resource positions are in a many-to-one relationship, and the many-to-one relationship specifically indicates that the same communication resource position corresponds to multiple different pilot signal ports. The reason why the correspondence relationship is transmitted to the target terminal is that the number of pilot detection signals generated by the target terminal at each communication resource position is different. Since the pilot detection signal to be generated is in one-to-one relationship with the pilot signal port, the correspondence between the communication resource location and the pilot signal port can represent the communication resource location and the pilot detectionCorrespondence between signals. Therefore, if the corresponding relationship between the port and the communication resource position is a one-to-one relationship, the target terminal only needs to generate one pilot detection signal at one communication resource position, and if the corresponding relationship between the pilot signal port and the communication resource position is a many-to-one relationship, the target terminal needs to generate a plurality of pilot detection signals at one communication resource position. In addition, the configuration information may also include some information required to generate the pilot signal sequence. Some of the information required to generate the pilot signal sequence refers to parameters required to generate the pilot signal sequence, such as the identity of the neighbor cell, the scrambling code number (e.g., n)_SCIDE {0,1}), the scrambling code identification corresponding to the scrambling code number (e.g.,

)。

s202: and the target terminal detects the received interference according to the notification message and determines the interference source information of the interference.

And the target terminal measures the interference according to the indication of the notification message. As mentioned above, the pilot detection signal needs to be generated for measurement, so the target terminal before interference measurement first determines the type of the pilot detection signal to be generated according to the type of the pilot signal in the notification message, and determines the form of the pilot detection signal to be generated according to the number of ports in the neighboring cell in the notification message. For example, if the type of the pilot signal in the notification message is DMRS, the type of the pilot detection signal to be generated is also DMRS; the number of ports in the neighboring cell is 6, it may be determined that the pilot detection signal to be generated is in the form of a1-a 6. It should be noted that the types of pilot signals in the communication message may include a plurality of types, and the target terminal determines which type of interference signal to detect according to its own communication situation, and generates the type of pilot detection signal.

After determining the type and form of the pilot detection signal, each pilot signal may be generated. If the corresponding relationship between the ports and the communication resource locations in the notification message sent by the serving cell is many-to-one, then at each communication resource location, pilot detection signals corresponding to multiple ports corresponding to the communication resource location are generated. It should be noted that, signal parameters need to be input in the generation manner of the pilot detection signal, and the signal parameters may be derived from neighboring cell configuration parameters, and may include one or more of the type of the pilot signal, the number of ports in the neighboring cell, resource location information of the pilot signal, the port of the pilot signal, and a cell identifier, and the signal parameters may also be included in the notification message sent by the serving cell.

The notification message may further include resource location information of the pilot signal, so that after the pilot detection signal is generated, the pilot detection signal may be compared with the pilot signal at the resource location information, and if a generated pilot signal to be detected is the same as the pilot signal at the resource location information, it may be determined that the pilot signal at the resource location information is the pilot detection signal. For convenience of description, the determined pilot signal may be referred to as a target pilot signal.

It should be noted that the two pilot signals are the same, which indicates that the target terminal is interfered. In addition, the notification message includes a plurality of communication resource positions, and if the target terminal detects the same pilot signal at a certain resource position information, it indicates that the target terminal is interfered at the communication resource position, and if the target terminal does not detect the same pilot signal at the certain resource position information, it indicates that the target terminal is not interfered at the communication resource position. It can be seen that the target terminal can detect the actually interfered communication resource position from among the plurality of communication resource positions, and for convenience of description, the interfered communication resource position can be referred to as a target communication resource position.

After the target terminal determines the pilot signal, the port corresponding to the pilot signal may be determined according to the corresponding relationship between the pilot signal and the port. For example, the pilot signal determined by the target terminal is a4, and as can be seen from the correspondence relationship between the pilot signal and the port, a4-port4, the port corresponding to the pilot signal a4 is port 4.

It should be noted that the correspondence between the pilot signal and the port may be defined in a protocol for the neighboring cell to communicate with the terminal, and the correspondence in the communication protocol may be transmitted to the target terminal through the serving cell. Or, the corresponding relation in the communication protocol may not be sent to the target terminal, but the target terminal sends the detected pilot signal to the serving cell, and the serving cell determines the port corresponding to the pilot signal according to the pilot signal and the corresponding relation, and then sends the port identification information corresponding to the port to the neighboring cell.

As can be seen from the above description, the target terminal can determine the pilot signal port used by the terminal causing interference to the target terminal in the neighboring cell. The port may be represented by a port identifier, which is an item of information of the interference source information. The interference source information may include port identification information, and the port identification information is used to indicate a port identification corresponding to the interference source. The port identification information may include one or more of CSI-RS port information, PDCCH DMRS port information, PDSCH DMRS port information, or the like, corresponding to the detected interference.

It should be noted that the port identifier may further include an identifier of a neighboring cell, which is used to indicate which cell the neighboring cell receives interference from the serving cell. The identity of the neighboring cell may comprise the actual identity of the neighboring cell or an index identity of the neighboring cell. Specifically, before determining the interferer information, the serving cell may notify the target terminal of a neighboring cell identifier list in advance, where the list includes an actual identifier of each neighboring cell and an index identifier corresponding to the actual identifier. Or in another implementation manner, the actual identifier of the neighboring cell may be explicitly carried only in the neighboring cell identifier list, the index identifier corresponding to the actual identifier may not be explicitly carried in the neighboring cell identifier list, and the index identifier may be determined by the order of the actual identifier in the neighboring cell identifier list. After receiving the list of identifiers of neighboring cells, the target terminal can search the index identifier corresponding to the actual identifier in the list according to the actual identifier of the neighboring cell, and report the index identifier as the identifier of the neighboring cell. Because the data volume of the index identifier of the adjacent cell is smaller than the actual identifier of the adjacent cell, the use of the index identifier can reduce the communication resources used by the target terminal for reporting the interference source information.

In addition, the interference source information may further include interference time information and resource information where interference is located. The port identifier, the interference time information, and the resource information where the interference is located are used to determine an interference source, i.e., a terminal that generates interference to the target terminal, in the adjacent cell, and a specific determination manner is referred to the following step S205 and is not described herein again.

The interference time information represents time information of interference occurrence, and when the target terminal detects the interference, the interference time information can be recorded and uploaded to the serving cell as one item of information of the interference source information. It should be noted that the interference source information uploaded by the target terminal may not include the interference time information, but the serving cell may determine the interference time information. Specifically, when receiving the interferer information reported by the target terminal, the serving cell may obtain the reporting time of the interferer information, and the serving cell may record a correspondence between the reporting time of the interferer information and the interferer time information in advance (for example, a protocol specifies a correspondence between the reporting time and the interferer time information). Alternatively, the interference source information transmitted from the serving cell to the neighboring cell may not include the interference time information, and the interference time information is determined by the neighboring cell itself. Specifically, the neighboring cell and the serving cell may negotiate a correspondence between a time when the serving cell transmits the interference source information and the interference time information, so that the neighboring cell may determine the interference time information according to the time when the serving cell transmits the interference source information; or the clocks of the neighboring cell and the serving cell are synchronous, the time information between the neighboring cell and the serving cell is synchronous, and the neighboring cell can determine the interference time information according to the time when the serving cell sends the interference source information and the corresponding relationship between the reporting time of the interference source information and the interference time information.

And the resource information of the interference, namely the communication resource position of the interference detected by the target terminal. The resource information where the interference is located may be in units of resource blocks, or in units of granularity smaller than that of resource blocks (such as REs, or one half or one quarter of a resource block), or may specifically be in units of BWPs, where one BWP may be composed of multiple resource blocks or multiple granularities smaller than that of resource blocks. Optionally, the resource information where the interference is located is resource block RB information. And for the target terminal, the resource block information where the interference is located is which Resource Blocks (RBs) really interfered with. The information of the interfered Resource Blocks (RB) of the target terminal can represent the interfered Resource Blocks (RB) of the adjacent cells, and the information and the interfered Resource Blocks (RB) are in one-to-one correspondence. There are various ways in which the target terminal may determine the interfered resource block RB. In a determination mode, a target terminal detects whether a pilot signal is sent by an adjacent cell in a corresponding resource block in a resource block where a useful signal of the target terminal is located. If a pilot signal is detected, the target terminal determines that the resource block RB in which the pilot signal is located is interfered. In another determination mode, the target terminal detects whether the neighboring cell sends a pilot signal in all resource blocks corresponding to the entire bandwidth of the serving cell, and if the pilot signal is detected, the target terminal determines that the resource block RB where the pilot signal is located is interfered. It should be noted that all resource blocks corresponding to the entire bandwidth of the serving cell may be notified to the target terminal through the notification message. In another determination mode, the target terminal detects whether the adjacent cell sends a pilot signal in all resource blocks corresponding to the entire bandwidth of the adjacent cell, and if the pilot signal is detected, the target terminal determines that the resource block RB where the pilot signal is located is interfered. It should be noted that all resource blocks corresponding to the entire bandwidth of the neighboring cell may be notified to the target terminal through the notification message.

It should be noted that the resource block information where the interference is located may not be included in the interference source information sent by the target terminal to the serving cell, but may be determined by the serving cell itself. Specifically, the resource block of the target terminal is allocated by the serving cell, so the serving cell can allocate the resource block allocated to the target terminal as the resource block where the interference is located. However, the number of resource blocks determined in this way is multiple, and the finally determined interference source may not be very accurate. In addition, the serving cell and the target terminal may negotiate that the target terminal detects interference on different resource blocks in different time periods, for example, the resource block 1-5 is detected at time 1, and the resource block 6-10 is detected at time 2, so that the serving cell may determine which resource block the interference belongs to according to the interference time information. After the serving cell determines the resource block where the interference is located, the resource block information is included in the interference source information sent to the adjacent cell. Or, in another implementation, the serving cell may not determine the resource block information, but the neighboring cell determines, according to the interference time information, the pilot port information carried in the interference source information, and the historical scheduling information of the neighboring cell, which resource blocks in the corresponding interference time information employ the corresponding pilot ports, so as to obtain the resource block information where the interference is located.

The target terminal takes the port identification information, the interference time information and the resource block information where the interference is located as three items in the interference source information, and certainly, the interference source information may also include other optional information. It should be noted that the interference source information includes port identification information, but the interference time information and the resource block information where the interference is located may be optional items in the interference source information sent by the target terminal to the serving cell, and may not be included in the interference source information. The interference time information and/or the resource block information where the interference is located may be determined by the serving cell, and the serving cell includes these two items of information in the interference source information sent to the neighboring cell. Or in some application scenarios, the serving cell may not include the one or two pieces of information in the interference source information sent to the neighboring cell, but the neighboring cell determines the one or two pieces of information by itself. Specifically, if the clocks of the neighboring cell and the serving cell are synchronized, the neighboring cell may determine the resource block information where the interference is located according to the interference time information.

S203: and the target terminal reports the interference source information to the serving cell.

The target terminal can also obtain the interfered port after detecting the interference source information, establish the corresponding relation between the interfered port and the interference source information, and report the corresponding relation when reporting the interference source information, so that the serving cell or the adjacent cell can determine which terminal is interfered by the interference source information after receiving the interference source information reported by the target terminal. For the sake of brevity, the correspondence may be expressed as: interference source information [ port ].

For example, suppose that the ports used by the target terminal include port 0, and the reported corresponding relationship is: the interference source information corresponding to the port 0 is cell 0+ port 1, and it can be determined through the correspondence that the terminal corresponding to the port 0 is interfered by the terminal corresponding to the port 1 in the cell 0. And assuming that the other corresponding relation reported by the target terminal is as follows: the interference source information corresponding to the port 1 is cell 1+ port 0, and it can be determined through the correspondence that the terminal corresponding to the port 1 is interfered by the terminal corresponding to the port 0 in the cell 1. It should be noted that the port used by the target terminal may be replaced by a code word (codeword) or other resource information that may have a corresponding relationship with the terminal.

It should be noted that the target terminal may report all interference source information detected to the serving cell. In another implementation manner, after the target terminal detects the interference, strong interference is determined from the detected interference, and interference source information corresponding to the strong interference is sent to the serving cell. That is, the interferer information of weak interference is not sent to the serving cell, which is to reduce resource consumption caused by sending the interferer information.

After the target terminal detects the interference source information, the target terminal can also detect the relevant information of the interference intensity generated by the interference source, and determines whether the interference is strong interference or weak interference according to the relevant information of the interference intensity. If the protocol between the serving cell and the neighboring cell specifies that only the strong interference generated by the neighboring cell is to be processed, the serving cell may only notify the interference source information corresponding to the strong interference of the neighboring cell, so that the neighboring cell only processes the interference source information corresponding to the strong interference.

It can be understood that, in order to implement the above processing, the serving cell may determine the interference source information corresponding to the strong interference, and the specific determination manner may be multiple: for example, the target terminal selects the interference source information before reporting the interference source information, and only reports the interference source information corresponding to the strong interference, so that the serving cell can obtain that the interference source information is the interference source information corresponding to the strong interference as long as the serving cell receives the interference source information; if the target terminal reports the interference strength related information to the serving cell when reporting the interference source information, the serving cell judges whether the interference is strong interference or weak interference according to the interference strength related information, and then the interference source information corresponding to the strong interference can be determined.

If the target terminal determines the strong interference, the target terminal may determine the strong interference in various ways.

In one determination method, if the receiver of the target terminal is a non-advanced receiver, the target terminal determines whether the interference is strong interference or weak interference according to the channel correlation between the own signal and the interference channel. For example, if the channel correlation between the target terminal's own signal and the interfering channel meets a certain requirement, the interference of the interfering channel is called strong interference; otherwise, the interference is determined to be weak interference.

In another determination mode, if the receiver of the target terminal is a non-advanced receiver, the target terminal determines the magnitude of interference power, and if the magnitude of the interference power reaches a certain threshold, the interference is determined as strong interference; otherwise, the interference is determined to be weak interference.

In another determination manner, if the receiver of the target terminal is an advanced receiver, the target terminal may obtain a suppression situation of the advanced receiver on the detected interference, and determine whether the interference is strong interference or weak interference according to the suppression situation. Wherein the interference suppression situation may also be referred to as an interference suppression effect, an interference cancellation effect or an interference cancellation situation. Specifically, the target terminal obtains a signal to interference plus noise ratio (SINR) before interference suppression by the advanced receiver and a signal to interference plus noise ratio (SINR) after interference suppression, and compares the difference between the two SINRs. If the difference is smaller than a certain threshold value and the interference power reaches a certain threshold value, determining the interference as strong interference; otherwise, it is called weak interference. The SINR before interference suppression and the SINR after interference suppression are calculated as follows. The target terminal estimates data-related information of interference generated by the neighboring cell, such as Modulation and Coding Scheme (MCS), and rank, so the data-related information may be referred to as an interference generation parameter. The target terminal also needs to obtain the channel information of the interference, and then the approximate signal of the data signal of the interference can be obtained by calculation according to the generation parameter of the interference and the channel information of the interference. The target terminal obtains the received total interference data signal, and the data signal of the target terminal is divided by the total interference data signal to obtain the SINR before interference suppression. The target terminal subtracts the data signal after interference from the total interference data signal to obtain a data signal after interference suppression, and divides the data signal after interference suppression by the data signal after interference suppression to obtain an SINR after interference suppression.

In another determination method, the target terminal determines whether the data decoding in the own channel is correct, and if so, determines that the interference is strong interference, otherwise, determines that the interference is weak interference.

In the above implementation manners, the target terminal determines whether the interference is strong interference or weak interference, and only needs to send interference source information corresponding to the strong interference to the serving cell. In another implementation, the target terminal may also send the interference strength related information to the serving cell, and the serving cell determines that the interference is strong interference or weak interference according to the interference strength related information. The interference strength related information is used to determine whether the interference is strong interference or weak interference, and the determination method may be that the target terminal determines whether the interference is strong interference or weak interference. It should be noted that, in the first implementation, the target terminal only needs to upload the interference source information corresponding to the strong interference, but in this implementation, the target terminal may not determine whether the interference is the strong interference or the weak interference, and the target terminal also sends the interference strength related information corresponding to the interference source information to the serving cell.

In addition, when calculating the SINR before interference suppression and the SINR after interference suppression, the calculation may be performed not only when the target terminal receives data transmitted by the serving cell. If the target terminal and the serving cell do not communicate with each other, some analog data may be generated, and the analog data may be used as data transmitted from the serving cell to the target terminal, and the SINR before interference suppression and the SINR after interference suppression may be calculated based on the analog data. This is because, when the neighboring cell communicates with the terminal in the neighboring cell, the serving cell may not communicate with the target terminal at the same time, and therefore the target terminal is not actually interfered, but the interference may be generated as long as the two communicate at the same time, so that the target terminal can simulate a communication process, and the interference detected in the process can be used as the interference in the actual communication process.

It should be noted that, if the target terminal needs to report the interference source information and the interference strength related information, the two pieces of information may be reported at the same time or at different times. The reporting mode may be reporting through a Physical Uplink Control Channel (PUCCH), or reporting through a Physical Uplink Shared Channel (PUSCH). If the interference source information is reported through a PUSCH and reported through a media access control element (MAC CE), the MAC CE may carry interference measurement time information, such as a slot or/and a System Frame Number (SFN), that is, interference time information in the interference source information. It should be noted that, in the above step S202, if the target terminal does not explicitly report the interference time information, the serving cell may determine the interference time information according to the reporting time of the interference source information, and the serving cell is determined according to a corresponding relationship between the reporting time of the interference source information and the interference time information. If interference is reported through the PUCCH or PUSCH, a certain time corresponding relation exists between the sending time or the reporting time of the PUCCH or PUSCH and the interference measurement time, such as a certain duration with a fixed interval, so that after receiving interference source information reported by the PDCCH or PUSCH, a serving cell can determine interference time information according to the corresponding relation.

It should be noted that, if the target terminal does not report the information related to the interference strength, the serving cell may determine whether the interference is strong interference according to the CQI information reported by the target terminal (for example, the CQI is lower than a certain threshold, the interference may be considered strong interference, otherwise the interference may be considered weak interference), or may also determine whether the interference is strong interference according to the signal strength (RSRP) reported by the target terminal (for example, if the CQI is lower than a certain threshold and the RSRP is higher than a certain threshold, the interference is considered strong interference, otherwise the interference is considered weak interference).

If the target terminal reports the interference source information when the communication protocol between the target terminal and the serving cell specifies that the target terminal reports the received data, the interference source information can be reported together with a confirmation or non-confirmation signal of the downlink received data fed back by the target terminal.

S204: the serving cell sends interference source information to the neighboring cells.

If the interference source information reported by the target terminal includes the port identifier, the interference time information, and the resource block information where the interference is located, the serving cell may forward the interference source information to the neighboring cell. If the interference source information does not include the three items of information, the serving cell determines the three items of information according to the relevant information of the interference source information reported by the target terminal, and then forwards the three items of information to the adjacent cell. It should be noted that the information related to the interferer information is used for the serving cell to determine the interferer information, and the information related to the interferer information is described in detail in the above steps, which is briefly described below. As can be seen, if the target terminal uploads the relevant information of the interference source information, the serving cell may perform preprocessing on the relevant information of the interference source information to determine the interference source information, and the specific processing may include the following items.

As mentioned above, the interference source information reported by the target terminal may have a corresponding relationship with the neighboring cell, and the serving cell may send the interference source information to the neighboring cell corresponding to the interference source information according to the corresponding relationship. If the interference source information includes the index identifier of the neighboring cell, the neighboring cell may convert the index identifier of the serving cell into the actual identifier of the neighboring cell. And if the interference source information does not have the adjacent cell identification, the interference source information is handed to the service cell for processing. For example, the serving cell may inform all neighboring cells of the interferer information, but in this case the accuracy is low.

As mentioned above, the target terminal may report the interference strength related information, and after receiving the interference strength related information, the serving cell may determine the strong interference according to the interference strength related information, and then send the interference source information to the neighboring cell as the interference source information corresponding to the strong interference.

The interference source information has a correspondence relationship with the target terminal, and the correspondence relationship is used to indicate which of the interference source information received by a certain target terminal is. The serving cell may group the target terminal and/or interferer information before sending the interferer information to the neighboring cell. The serving cell may send the correspondence between the interference source information and the target terminal to the neighboring cell, and send the correspondence in a manner of grouping the target terminal and/or the interference source information, which may remove redundant data to reduce the consumption of communication resources.

For example, if the interference source information corresponding to three target terminals in the serving cell is the same, the three target terminals may be used as a target terminal group, and the target terminal group corresponds to the same interference source information. Thus, the corresponding relation sent by the serving cell to the adjacent cell does not include three corresponding relations corresponding to the three target terminals respectively, but one corresponding relation between the target terminal group and the interference source information, thereby reducing the consumption of communication resources.

If the information of the three interfering sources received by a certain target terminal is assumed to be the same, the information of the three interfering sources is removed from redundancy and then is used as an interfering source information group, and the interfering source information group corresponds to the same target terminal. Therefore, the corresponding relation of the serving cell and the adjacent cell does not contain three interference source information, but the corresponding relation of the target terminal and one interference source information group, and the consumption of communication resources is reduced. It should be noted that, the serving cell may also group the target terminal and/or the interferer information according to a part of the content in the interferer information. For example, if the pilot ports of the interference source information corresponding to three target terminals in the serving cell are the same, the three target terminals may be used as a target terminal group, and the target terminal group corresponds to the pilot ports in the same interference source information. Thus, the corresponding relationship sent by the serving cell to the adjacent cell does not include three corresponding relationships corresponding to the three target terminals respectively, but includes one corresponding relationship between the target terminal group and the pilot port in the interference source information (other different information in the interference source information is carried separately), thereby reducing the consumption of communication resources. If the pilot ports in the three interfering source information received by a certain target terminal are the same, the three interfering source information are removed from redundancy and then taken as an interfering source information group, and the interfering source information group corresponds to the same target terminal. Therefore, the corresponding relation of the serving cell to the adjacent cell does not include the pilot ports of the three interference source information, but the corresponding relation of the target terminal and one interference source information group, thereby reducing the consumption of communication resources.

S205: and the adjacent cell determines an interference source corresponding to the interference source information according to the scheduling history information and the interference source information.

The adjacent cell may record scheduling history information of a terminal serving the adjacent cell, where the scheduling history information records a correspondence between a time, a port, a resource block, and the terminal. Specifically, when the adjacent cell schedules the terminal, the same resource block may serve different terminals at different times, so that the time of interference can be determined by using the interference time information in the interference source information; furthermore, the neighboring cells may use a plurality of different ports to schedule different terminals at the same time, so after determining the interference time information, the ports causing interference may be further determined among the plurality of ports by using the port identifiers in the interference source information; under the same port at the same time, different resource block information may serve different terminals, so after the interference port is determined, resource block information where an interference source in the interference source information is located may be further used to determine a resource block causing interference in a plurality of resource blocks, and then the terminal corresponding to the determined resource block is determined as the interference source according to a corresponding relationship between the resource block and the terminal in the scheduling history information. Assuming that the interference caused by the interfering source to the interfered terminal is already stable, and the stable interference can be recorded in the historical scheduling information, the interfering source information may include the identifier of the interfered terminal, and then the interfering source may be determined according to the historical scheduling information and the identifier of the interfered terminal. Or, the interference source information may include the interference time information and the identifier of the interfered terminal, and then the interference source may be determined according to the historical scheduling information and the identifier of the interfered terminal.

For ease of understanding, the above process determination is described in conjunction with fig. 3. As shown in fig. 3, the interference time information in the interference source information is used as a coordinate value on a time coordinate axis, and a plurality of ports and resource blocks can be determined according to the time coordinate value; further, the port identifier in the interference source information is used as a coordinate value on a port coordinate axis, a certain port can be determined from the plurality of ports according to the port coordinate value, and a plurality of resource blocks are corresponding to the port. The whole frequency domain bandwidth of a cell can be divided into a plurality of resource blocks, so a plurality of resource blocks from 0 to N are distributed on a frequency coordinate, further, the resource block information where the interference in the interference source information is located is taken as a coordinate value on a frequency coordinate axis, and the resource block causing the interference can be determined in the plurality of resource blocks according to the resource block information. As shown in fig. 3, it is assumed that the determined resource blocks are selected by a circular wire frame. And then the terminal corresponding to the resource block in the scheduling history information is determined as an interference source.

It can be seen that the correspondence between time, port, resource block and terminal can be expressed as [ time, port, resource block ] -terminal, that is, it can only determine which terminal the interference source is by using the three items of information of time, port and resource block. It should be noted that, in the determining step, the time information is determined first according to the writing sequence, then the port information is determined, and finally the resource block information is determined, but the sequence determined in the practical application is not limited to the writing sequence, and may be other sequences as long as the three items of information are used to determine the terminal.

It should be noted that, in order to further simplify the determination process of the neighboring cell to the interference source, after the interference source causes relatively stable interference to the serving cell, the corresponding relationship between the interfered terminal in the serving cell and the interference source in the neighboring cell is recorded, that is, which terminals cause relatively stable interference to which terminals, the corresponding relationship between the interfered terminal and the interference source can be recorded. It should be noted that, the correspondence between the interference source and the interfered terminal may also record the interference magnitude between the two, as shown in table 1 below. Assume that cell 1 in table 1 is the serving cell and cell 2 is the neighbor cell.

TABLE 1

Magnitude of interference	Cell 1-terminal 1	Cell 1-terminal 2	Cell 1-terminal 3
				Cell 2-terminal 1	Is free of	0.3	0.6
Cell 2-terminal 2	0.2	Is free of	0.1
				Cell 2-terminal 3	0.8	0.5	Is free of

According to the technical scheme, the method includes that the terminal subjected to interference in the service cell detects the interference on the terminal, the terminal or the service cell determines interference source information according to a detection result, the service cell sends the interference source information to the adjacent cell, and the adjacent cell determines an interference source causing the interference according to scheduling history information and the interference source information, so that the interference source can be accurately restrained, and the influence of the interference source on the terminal in the service cell is reduced under the condition that the communication quality of other terminals is not influenced.

In the application, the adjacent cells can accurately determine the information of the interference source and can further realize the inhibition of the interference source. As shown in fig. 4, the method may further include the following step S206 in addition to the steps included in fig. 2.

S206: the interference caused by the interference source is suppressed by the adjacent cell.

In one implementation, the serving cell may send parameters for interference cancellation to the neighboring cells, so that the neighboring cells can cancel interference caused by the interference sources according to the parameters when scheduling the interference sources. Here, the cancellation may be regarded as a suppression action, and the result is not described, that is, the interference reduction may not necessarily be completely cancelled. Suppression is to reduce interference, and any suppression means that can achieve the above-described effects may be included in the realizable forms of the present invention. The parameters for suppressing interference may include two types, one type is the communication parameters of the target terminal, i.e. the interfered terminal, and the communication parameters may include, but are not limited to, ports, beams, a set of physical downlink control channel control resources, etc.; one type is a communication parameter recommended to an interference source, i.e., a terminal causing interference, and the communication parameter may include, but is not limited to, a port, a beam, a physical downlink control channel control resource set (mainly time-frequency resource information corresponding to a physical downlink control channel), a modulation and coding strategy, a rank, a power, and the like.

It should be noted that after the serving cell sends the first type of communication parameters, that is, the communication parameters of the target terminal, to the neighboring cell, the neighboring cell needs to determine, according to the communication parameters, target communication parameters capable of suppressing interference caused by the interference source, but after the serving cell sends the second type of communication parameters, that is, the recommended communication parameters, to the neighboring cell, the neighboring cell may directly use the recommended communication parameters as the target communication parameters, so as to simplify the processing procedure of the neighboring cell on the interference source.

For example, the serving cell may negotiate with the neighboring cells, and use a port or beam in the neighboring cell that does not cause interference to the target terminal as a target port or a target beam, and send the target port or the target beam to the neighboring cell, so that the neighboring cell replaces the port or the beam used by the interference source with the target port or the beam. That is to say, the neighboring cell and the serving cell may negotiate for scheduling time-frequency resources for the interfering source and the interfered terminal, so that the interfered terminal and the interfering source are scheduled in a staggered manner, and interference is avoided by not occupying the same resources.

As another example, the serving cell may recommend modulation and coding strategies, ranks, powers, etc. to neighboring cells, so that the serving cell directly uses these recommended parameters when scheduling the interference source to suppress interference caused by interference.

In addition to the above interference suppression methods, other existing interference suppression methods may be used, for example, special processing such as higher Control Channel Element (CCE) or transmit diversity is performed on the PDCCH used by the interference source.

It should be noted that, in order to improve the performance of the interference source, when the interfered terminal, for example, the target terminal, has no service, the serving cell may notify the neighboring cell that the interfered terminal has no service, and the neighboring cell may reduce or remove the suppression of the interference source after obtaining the information.

In the above embodiment shown in fig. 4, the interference is suppressed by the neighboring cells. In another implementation, the serving cell may suppress interference experienced by the target terminal. As shown in fig. 5, the steps included in fig. 2 may further include the following steps S506 to S509.

S506: the neighboring cells determine the communication parameters used by the interferer to generate the interfering signal.

The communication parameters specifically include: the manner in which the pilot is mapped to the communication resource and the coding parameters of the interference signal may specifically include, but are not limited to, any one or more of the following: the channel estimation method includes the steps of MCS, a port, a cell radio network temporary identifier (C-RNTI), a frame structure, a rank indication corresponding to the PDSCH, PDSCH DMRS information and occupied resource block information. When detecting interference in step S202 of fig. 2, the interference source data signal needs to be estimated, and the communication parameters in this step may be used in the estimation.

The neighboring cell may send the communication parameters to the target terminal through the serving cell, and the target terminal may predict an interference data signal (e.g., PDSCH) by using MCS and port information in the communication parameters. In addition, the C-RNTI can also be used for the target terminal to detect the PDCCH sent by the adjacent cell to the interference source so as to predict the interference data signal.

The frame structure may include self-contained (self-contained) uplink and Downlink allocation, a 2-stage Downlink control information (2-stage DCI) format, a codeword mapping manner, PDCCH core configuration, and the like in each subframe.

The self-contained uplink and downlink allocation indicates which symbols indicate downlink signals, which symbols indicate uplink signals and which signals indicate gaps corresponding to downlink-to-uplink. The target terminal can use the self-contained uplink and downlink allocation information to predict which resources are interfered by downlink signals of the adjacent cells and which resources are interfered by uplink signals of the adjacent cells.

The 2-stage DCI indicates whether an interference source adopts a 2-stage DCI mode, wherein the 2-stage DCI allocates downlink control information into two parts, one part is placed in a PDCCH CORESET region, and the other part is placed in a data region. The codeword mapping method may include: several codewords and the relation of mapping the codewords to downlink resources are adopted, such as layer-to-frequency time, layer-to-time-to-frequency, time-to-frequency-to-layer, or frequency-to-layer-to-time. The mapping precedence relationship indicates which dimension is occupied with the resources first and then occupies the resources of other dimensions, where the relationship between the time, the frequency, and the layer can be referred to as shown in fig. 3. It should be noted that, a layer here refers to that multiple data can be transmitted on the same time-frequency resource. The 2-stage DCI can be used for the target terminal to predict which resources are interfered by the control information of the adjacent cell and which resources are interfered by the data channel of the adjacent cell.

The role of the codeword mapping mode is to better decode the data information of the interference source by the target terminal, so as to more accurately recover the interference source signal, and the interference cancellation effect after subtracting the interference source signal from the total interference is better.

The PDCCH CORESET configuration comprises time domain resources and frequency domain resource positions of the PDCCH, and is used for determining the position of the PDCCH of the interference source by the target terminal, so that the target terminal can conveniently detect the PDCCH of the interference source, and therefore relevant information of the PDCCH is obtained, and interference is suppressed.

The PDSCH DMRS information may include forward DMRS configuration information, additional DMRS configurations, and so on. PDSCH DMRS, the purpose of the information is to confirm DMRS resource information of PDSCH of the interfering source for the target terminal, so that the target terminal can perform PDSCH channel estimation, thereby better eliminating or suppressing PDSCH of the interfering source. The forward DMRS configuration information configuration comprises the number of DMRS ports, the position information of the DMRS and a port distinguishing method of the DMRS. The extra DMRS configuration means that the PDSCH has the DMRS pilot at the position indicated by the forward DMRS configuration information, and has extra DMRS at other positions for better channel estimation.

It should be noted that the communication parameters used by the interference source to generate the interference signal may include multiple values of a certain communication parameter, such as multiple possible values of an MCS.

S507: the neighboring cell transmits the communication parameters used by the interfering signal to the serving cell.

Wherein the neighboring cell may transmit the communication parameters to the serving cell through the scrambled PDCCH.

It should be noted that, the neighboring cell may transmit the communication parameters used by the interfering signal according to the target terminal group of the serving cell and/or the interfering source group of the neighboring cell, so as to reduce the consumption of communication resources.

Specifically, the communication parameters used by the interference signal have a correspondence relationship with the target terminal, and the correspondence relationship indicates to which target terminal the communication parameters used by the interference signal need to be sent. The neighboring cells may group the target terminal and/or the communication parameters before sending the communication parameters to the serving cell. Specifically, the same communication parameter may be used as a communication parameter group, and the correspondence between the target terminal and the communication parameter group is sent to the serving cell; or, the same target terminal may be used as a target terminal group, and the correspondence between the communication parameters and the target terminal group is sent to the serving cell; or a plurality of target terminals can be used as a target terminal group, the target terminals have a plurality of same interference sources or one interference source, the interference sources or the interference sources are further used as an interference source group, and the corresponding relation between the target terminal group and the interference source group and the corresponding communication parameters is further sent to the serving cell. This way, redundant data can be reduced, thereby reducing the consumption of communication resources.

S508: the serving cell sends the communication parameters used by the interfering signal to the target terminal.

The serving cell notifies the target terminal of the communication parameters of the interference signal, so as to facilitate the target terminal to perform better interference suppression, and the detailed suppression process is detailed in step S509.

It should be noted that there may be a plurality of interference sources causing interference to the target terminal, but the processing capability of the target terminal may be limited, and only a limited amount of interference can be eliminated, so that the target terminal may notify the processing capability of the serving cell itself through a wireless air interface, for example, notify the serving cell itself that several layers of interference or several interference sources can be eliminated. After obtaining the message, the serving cell may selectively send the communication parameters of the interference signals adapted to its capability to the target terminal, so that the target terminal only needs to cancel or suppress the interference signals.

The serving cell may determine, according to the processing capability of the target terminal, interference sources that can be processed by the target terminal, and send the communication parameter sets corresponding to the interference sources as the communication parameter sets to the target terminal, so that the target terminal only needs to eliminate or suppress interference according to the communication parameter sets. Or, the serving cell may also notify the interference source information corresponding to the target terminal.

S509: and the target terminal suppresses the interference signal according to the communication parameters used by the interference signal.

Wherein suppression of interfering signals is to reduce interference. The reduction may be performed in a variety of ways including, for example, interference cancellation, and interference avoidance.

The interference cancellation means that the target terminal may generate a signal opposite to the interference signal by using the communication parameters (mainly, the encoding parameters of the interference signal) in step S506, and superimpose the signal and the total data signal, so as to cancel the interference signal from the total data signal by means of cancellation. The interference reduction and cancellation means that the target terminal can reduce the interference signal by using the communication parameters (mainly the coding parameters of the interference signal) in step S506, and then subtract the interference signal from the total data signal of the target terminal itself, so as to suppress the interference signal. A specific implementation of interference avoidance is that the target terminal transmits the data signal using a parameter (mainly, a manner in which the pilot is mapped to the communication resource) different from the communication parameter in step S506.

The interference cancellation may include symbol level interference cancellation (SL-IC) or code word level interference cancellation (CW-IC). Wherein the SL-IC requires the target terminal to decode the interferer signal (i.e., the bit stream of the interferer signal needs to be estimated), and the CW-IC requires the target terminal to demodulate the interferer signal (i.e., the modulation scheme of the interferer signal needs to be estimated).

Taking the current interference elimination of the useful signal PDSCH of the target terminal and the interference from the PDSCH of the neighboring cell as an example, after the target terminal acquires the communication parameters of the neighboring cell, the target terminal may calculate the recovered PDSCH signal of the interference source according to the communication parameters and the channel information of the interference obtained by the pilot signal of the interference signal. The target terminal obtains the received interfered useful PDSCH total signal, subtracts the restored PDSCH signal of the interference source from the interfered PDSCH total signal to obtain the useful PDSCH after the interference is eliminated, and then decodes the useful PDSCH to obtain the data information carried by the useful PDSCH. The MCS, the port, the cell radio network temporary identifier (C-RNTI), the frame structure, the rank indication corresponding to the PDSCH, and the PDSCH DMRS information in the communication parameters of the interference source are all calculated by the target terminal to obtain the PDSCH signal of the interference source.

According to the technical scheme, on the basis that the interference source can be accurately determined, the interference source can be inhibited through the adjacent cell, or the target terminal can be informed of the communication parameters of the interference signal, so that the target terminal can inhibit the interference, and the influence of the interference source on the target terminal is reduced.

In the above embodiment, the communication parameters used when the target terminal performs interference suppression are all transmitted from the neighboring cell to the target terminal through the serving cell. However, the target terminal may also obtain some or all of the required communication parameters through its own detection algorithm. Specifically, the method comprises the following steps:

in one implementation, the neighboring cell may inform the target terminal, through the serving cell, of a portion of the communication parameters, which are information other than MCS, rank indication, occupied resource blocks. That is, the MCS, the rank indication and the occupied resource blocks can be estimated by the target terminal itself through a detection algorithm.

In estimating these communication parameters, the target terminal may inform some of the communication parameters of the target terminal through the serving cell using the neighboring cell. For example, the neighboring cell notifies the target terminal through the serving cell that the communication parameters include the C-RNTI and the PDCCH CORESET configuration, so that the target terminal can search the PDCCH of the interference signal by using the PDCCH CORESET configuration, and then decode the PDCCH by using the C-RNTI (the PDCCH is generally scrambled by using the C-RNTI), so that the communication parameter information such as the MCS, the rank indication, the occupied resource block, and the like can be obtained after decoding. Or the communication parameters are not transmitted through the scrambled PDCCH, but transmitted to the target terminal by the serving cell using Radio Resource Control (RRC) signaling.

The implementation manners of the target terminal decoding the PDCCH to obtain the communication parameters by using the C-RNTI comprise the following two manners.

One is that the adjacent cell informs the target terminal of the C-RNTI of an interference source in the adjacent cell through the serving cell, the target terminal decodes the PDCCH sent to the interference source by the adjacent cell according to the C-RNTI, and after the PDCCH is decoded, some communication parameters (such as MCS, rank indication, occupied resource block and other information) of an interference source signal can be obtained.

And the other is that the adjacent cell sends a PDCCH for the target terminal, and the PDCCH adopts an identifier, such as C-RNTI, allocated by the adjacent cell for the target terminal of the serving cell to scramble, or adopts an identifier, such as C-RNTI, allocated by the serving cell for the target terminal to scramble. And the target terminal decodes the PDCCH sent by the adjacent cell to the interference source according to the C-RNTI, and can acquire some communication parameters (such as MCS, rank indication, occupied resource block and other information) of the interference source signal after decoding the PDCCH.

It should be noted that the target terminal may decode the PDCCH for all the interferers in the set of interferers notified by the serving cell to obtain some communication parameters of the corresponding interfering signal. In decoding the PDCCH, it is necessary to specify which control resource set (coreset) to decode, and the coreset may be determined by negotiation.

Fig. 6 shows a schematic structural diagram of a communication device 600. The apparatus 600 may be used to implement the methods described in the above method embodiments, and reference may be made to the description of the above method embodiments. The communication apparatus 600 may be a chip, a network device (e.g., a base station), a terminal device or other network devices.

The communication device 600 includes one or more processors 601. The processor 601 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a terminal, or a chip), execute a software program, and process data of the software program. The communication device may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the communication device may be a chip, and the transceiving unit may be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or a base station or other network equipment. As another example, the communication device may be a terminal or a base station or other network equipment, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communication apparatus 600 includes one or more processors 601, and the one or more processors 601 may implement the method of the network device or the terminal device in the embodiment shown in fig. 2.

In one possible design, the communication device 600 includes means (means) for generating interferer information, and means (means) for transmitting interferer information. The functions of generating the means for interferer information and transmitting the means for interferer information may be implemented by one or more processors. The interferer information may be generated, for example, by one or more processors, and transmitted through a transceiver, or an interface of an input/output circuit, or chip. The information of the interference source can be referred to the related description in the above method embodiment.

Optionally, in one design, the processor 601 may also include instructions 603, which may be executed on the processor, so that the communication device 600 performs the method described in the above method embodiment.

In yet another possible design, the communication apparatus 600 may also include a circuit, which may implement the functions of the network device or the terminal device in the foregoing method embodiments.

In yet another possible design, the communication device 600 may include one or more memories 602 having instructions 604 stored thereon, which are executable on the processor to cause the communication device 600 to perform the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 602 may store the corresponding relations described in the above embodiments, or the related parameters or tables referred to in the above embodiments, and the like. The processor and the memory may be provided separately or may be integrated together.

In yet another possible design, the communication device 600 may further include a transceiver 605 and an antenna 606. The processor 601 may be referred to as a processing unit and controls a communication device (terminal or base station). The transceiver 605 may be referred to as a transceiver, a transceiving circuit, a transceiver, or the like, and is used for implementing transceiving functions of the communication device through the antenna 606.

Fig. 7 is a schematic structural diagram of a terminal device provided in the present application. The terminal device may be adapted to the system shown in fig. 2, and performs the functions of the terminal device, i.e. the target terminal in the above method embodiment. For convenience of explanation, fig. 7 shows only main components of the terminal device. As shown in fig. 7, the terminal device 70 includes a processor, a memory, a control circuit, an antenna, and an input-output means. The processor is mainly configured to process a communication protocol and communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform the actions described in the foregoing method embodiments, such as detecting, according to the notification message, interference caused by a base station to which the neighboring cell belongs to the target terminal; and if the interference of the base station to which the adjacent cell belongs to the target terminal is detected, determining interference source information of the interference and the like. The memory is used primarily for storing software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 7 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this embodiment of the present application.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor of fig. 7 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the embodiment of the present application, the antenna and the control circuit having transceiving functions can be regarded as a transceiving unit 701 of the terminal device 70, for example, for supporting the terminal device to perform the receiving function and the transmitting function of the target terminal as described in part of fig. 2. The processor having the processing function is regarded as the processing unit 702 of the terminal device 70. As shown in fig. 7, the terminal device 70 includes a transceiving unit 701 and a processing unit 702. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 701 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit 701 may be regarded as a sending unit, that is, the transceiver unit 701 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

The processor may be configured to execute the instructions stored in the memory to control the transceiver unit 701 to receive and/or transmit signals, so as to implement the functions of the terminal device in the above-described method embodiments. As an implementation manner, the function of the transceiving unit 701 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving.

Fig. 8 is a schematic structural diagram of a network device provided in the present application, for example, the network device may be a base station, specifically, a base station to which an adjacent cell belongs or a base station to which a serving cell belongs. As shown in fig. 8, the base station can be applied to the systems shown in fig. 1A and fig. 1B, and performs the functions of the network device in the above method embodiments. The base station 80 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 801 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 802. The RRU 801 may be referred to as a transceiver unit, transceiver, transceiving circuit, transceiver, or the like, and may include at least one antenna 8011 and a radio frequency unit 8012. The RRU 801 section is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending signaling messages described in the above embodiments to a terminal device. The BBU 802 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 801 and the BBU 802 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU 802 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) 802 may be configured to control the base station to perform the operation procedure related to the network device in the above-described method embodiment.

In an example, the BBU 802 may be formed by one or more boards, and the boards may jointly support a radio access network (e.g., an LTE network) with a single access indication, or may respectively support radio access networks (e.g., LTE networks, 5G networks, or other networks) with different access schemes. The BBU 802 further includes a memory 8021 and a processor 8022, the memory 8021 being configured to store the necessary instructions and data. The processor 8022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation flow related to the network device in the above method embodiment. The memory 8021 and processor 8022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the same element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of communication, comprising:

receiving a notification message from a base station to which a serving cell belongs, wherein the notification message is used for indicating a target terminal to carry out interference detection and/or configuration parameters for reporting;

detecting the interference of the base station of the adjacent cell to the target terminal according to the notification message;

if the interference caused by the base station to which the adjacent cell belongs to the target terminal is detected, determining interference source information of the interference, wherein the interference source information comprises port identification information, and the port identification information is used for indicating a port identification corresponding to an interference source; the interferer information further includes information indicating one or more of: interference time information and resource information of interference;

reporting the interference source information to a base station to which the serving cell belongs according to the notification message; and sending the interference source information to the base station of the adjacent cell by the base station of the serving cell, wherein the interference source information is used for indicating an interference source.

2. The communication method according to claim 1, wherein the notification message comprises: reporting at least one of configuration information and neighboring cell configuration information; wherein:

the reporting configuration information includes information indicating one or more of: reporting time, reporting conditions, the maximum number of interference sources to be reported and whether the measured channel type needs to be reported or not;

the neighbor configuration information includes information indicating one or more of: the type of pilot signal used by the base station to which the neighboring cell belongs, and the rule of mapping the pilot signal to the communication resource.

3. The communication method according to claim 1 or 2, wherein before reporting the interferer information to the base station to which the serving cell belongs according to the notification message, the method further comprises:

judging whether the interference is strong interference or weak interference;

and if the interference is strong interference, reporting the interference source information to the base station to which the serving cell belongs according to the notification message.

4. The communication method according to claim 1 or 2, further comprising:

obtaining interference strength related information of the interference;

and sending the interference strength related information to a base station to which a serving cell belongs.

5. The communication method according to any one of claims 1 to 2, further comprising:

receiving communication parameters used by the interference source sent by a base station to which the serving cell belongs;

and according to the communication parameters, suppressing the interference.

6. The communication method according to any one of claims 1 to 2, further comprising:

receiving a physical downlink control channel signal sent by a base station to which the adjacent cell belongs, decoding the physical downlink control channel signal by using the identifier of the target terminal, and obtaining a communication parameter used by the interference source;

and according to the communication parameters, suppressing the interference.

7. A method of communication, comprising:

receiving interference source information sent by a target terminal, wherein the interference source information is used for indicating an interference source; the interference source information comprises port identification information, and the port identification information is used for indicating a port identification corresponding to an interference source;

sending the interference source information to a base station to which the adjacent cell belongs;

the interference source information sent by the target terminal further comprises information indicating one or more of the following: interference time information and resource information of interference.

8. The communication method according to claim 7, further comprising:

obtaining the target reporting time of the interference source information;

determining interference moment information corresponding to the target reporting moment according to the corresponding relation between the reporting moment and the interference moment information;

and the interference time information is contained in the interference source information and is sent to the base station which the adjacent cell belongs to.

9. The communication method according to claim 7 or 8, wherein the sending the interferer information to the base station to which the neighboring cell belongs comprises:

determining whether the interference corresponding to the interference source information is strong interference or weak interference;

and if the interference corresponding to the interference source information is strong interference, sending the interference source information to a base station to which the adjacent cell belongs.

10. The communication method according to claim 9, wherein the determining whether the interference corresponding to the interferer information is strong interference or weak interference includes:

receiving interference strength related information corresponding to the interference source information sent by the target terminal;

and determining whether the interference corresponding to the interference source information is strong interference or weak interference according to the interference strength related information.

11. A method of communication, comprising:

receiving interference source information from a base station to which a serving cell belongs, wherein the interference source information is used for indicating an interference source;

determining an interference source corresponding to the received interference source information according to the corresponding relation between the interference source information and the interference source in the historical scheduling information and the received interference source information;

the interference source information includes: port identification, interference time information and resource information of interference; the determining an interference source corresponding to the received interference source information includes:

and searching terminals corresponding to the port identification, the interference moment information and the resource information of the interference in historical scheduling information, and determining the searched terminals as interference sources.

12. The communications method of claim 11, wherein the interferer information comprises: the identification of the interfered terminal in the base station to which the serving cell belongs; the determining an interference source corresponding to the received interference source information includes:

and searching a terminal identifier corresponding to the identifier of the interfered terminal in the historical scheduling information, and determining the terminal corresponding to the searched terminal identifier as an interference source.

13. A communications apparatus, comprising: a processor coupled with a memory;

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 12.

14. A readable storage medium storing a program or instructions which, when run on a computer, performs the method of any one of claims 1 to 12.